Stristr php

Php stristr

#Case-insensitive strstr()
#stristr(string $haystack, string $needle, bool $before_needle = false): string|false
#Returns all of haystack starting from and including the first occurrence of needle to the end.

<?php
  $email = 'USER@EXAMPLE.com';
  echo stristr($email, 'e'); // outputs ER@EXAMPLE.com
  echo stristr($email, 'e', true); // outputs US
?>

Source: php.net

Stristr php

<?php
  $string = 'Hello World!';
  if(stristr($string, 'terre') === FALSE) {
   echo '"terre" non trouvé dans la chaîne de caractères';
  }
// affiche : "terre" non trouvé dans la chaîne de caractères
?>

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